Message-ID: <20080619221941.588r3j9ascw0oco4@intran0x.frec.bull.fr>
Date: Thu, 19 Jun 2008 22:19:41 +0200
From: "Benjamin Thery " <Benjamin.Thery@bull.net>
To: Dave Hansen <dave@linux.vnet.ibm.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>, Tejun Heo <htejun@gmail.com>,
       Greg Kroah-Hartman <gregkh@suse.de>, linux-kernel@vger.kernel.org,
       Al Viro <viro@ftp.linux.org.uk>,
       Linux Containers <containers@lists.osdl.org>,
       Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH 01/11] sysfs: Support for preventing unmounts.
References: <20080618170729.808539948@theryb.frec.bull.fr>
	<20080618170730.256129077@theryb.frec.bull.fr>
	<1213811063.7922.39.camel@nimitz> <m18wx2o638.fsf@frodo.ebiederm.org>
	<1213893131.7922.67.camel@nimitz>
In-Reply-To: <1213893131.7922.67.camel@nimitz>
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Quoting Dave Hansen <dave@linux.vnet.ibm.com>:

> On Wed, 2008-06-18 at 13:12 -0700, Eric W. Biederman wrote:
>>
>> - The data in sysfs fundamentally changes behind the back of the
>>   VFS and we need to keep the VFS in sync.  Essentially this is the
>>   distributed filesystem problem.
>>
>> - In particular for sysfs_rename and sysfs_move_dir we need to support
>> finding
>>   the dcache entries and calling d_move.  So that the dcache does not
>>   get into an inconsistent state.  Timeouts and invalidates like NFS
>>   uses are to be  avoided if at all possible.
>
> Much clearer now, thanks!
>
> Can we get this description into the changelog, pretty please?

Yes sure.
I'll add it to the patch introduction.

Benjamin

>
> -- Dave
>
>
>


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